426517345677161 has 2 divisors, whose sum is σ = 426517345677162. Its totient is φ = 426517345677160.

The previous prime is 426517345677119. The next prime is 426517345677169. The reversal of 426517345677161 is 161776543715624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 332458480101136 + 94058865576025 = 18233444^2 + 9698395^2 .

It is a cyclic number.

It is not a de Polignac number, because 426517345677161 - 2¹⁸ = 426517345415017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (426517345677169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213258672838580 + 213258672838581.

It is an arithmetic number, because the mean of its divisors is an integer number (213258672838581).

Almost surely, 2^{426517345677161} is an apocalyptic number.

It is an amenable number.

426517345677161 is a deficient number, since it is larger than the sum of its proper divisors (1).

426517345677161 is an equidigital number, since it uses as much as digits as its factorization.

426517345677161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 177811200, while the sum is 65.

The spelling of 426517345677161 in words is "four hundred twenty-six trillion, five hundred seventeen billion, three hundred forty-five million, six hundred seventy-seven thousand, one hundred sixty-one".